Web Case stores any model Hot Shield when not in use, allowing for quick access when needed (similar to a SCBA facemask pouch on a turnout coat). Plenty of extra room for spare filter, goggles, etc. Made of tough Nylon Cordura 600 denier with 2 way YKK zippers and has two short straps with snaps (on backside) to secure to web harness or gear belt, etc., makes removal and installation quick & easy!